<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
  <div id="app">
    {{ message }}
    <div v-html="htmlData"></div>
  </div> 
  <script>
    let vm = new Vue({
      el: '#app',
      data: {
        message: '测试数据',
        htmlData: 'aaa'
      }
    })

    console.log(vm);
  </script>
</body>
</html>